A boy and a girl are sitting on the porch.
"I'm a boy," says the child with black hair.
"I'm a girl," says the child with red hair.
If at least one of them is lying, who is which?

What is both possible and impossible at the same time?

Christina has four daughters, and each of her daughters has a brother. How many children does Christina have?

What do you call a fish without an eye?

Solve below popular number sequence
314 159 265 358 979 323 846 ?

What mathematical symbol can be put between 5 and 9, to get a number bigger than 5 and smaller than 9?

Count the number of triangles in the picture below:

The ages of a father and son add up to 66.
The father's age is the son's age reversed.
How old could they be?
(3 possible solutions).

You can take four of the five letters out of this word, but the pronunciation never changes. What is the word?

I am an eight letter word and I am a computer terminology.
The second, third and fourth letters make an animal.
The fourth, fifth, sixth, seventh and eighth letters make a weapon.
The first, second, third and fourth letters can be taken as an outcome of any exam.
The fifth, sixth, seventh and eighth letter combine to form a high end typing software.

Can you tell who am I ?